The Sounders will be without their regular goalie, Michael Gspurning, in the first game. That's because he was ejected in the 85th minute Wednesday for touching the ball with his hands outside the goalie box at the end of a long Colorado clearance.

PORTLAND-SEATTLE

PLAYOFFSCHEDULE

The team with the most goals in two games wins.

If the teams are tied after regulation in game two, they will play a 30-minute overtime and then, if necessary, go to a penalty-kick shootout tiebreaker.

Game one is 7 p.m. Saturday at Seatte's CenturyLink Field (NBC Sports). Game two is at Jeld-Wen Field, 8 p.m., Thursday, Nov. 7.

In the other MLS West semi, the Los Angeles Galaxy face Real Salt Lake. That series starts at 6 p.m. Sunday in Utah (ESPN) and concludes at L.A., with a 6 p.m. Thursday, Nov. 7 match that kicks off that evening's West doubleheader (ESPN2).

REGULAR-SEASON RESULTS

Portland went 1-1-1 in three meetings with Seattle during the 2013 regular season. Two of the matches were in Seattle.

Portland won the most recent clash 1-0 at home on Oct. 13.

The teams drew 1-1 on March 16 at CenturyLink Field, and Seattle won there 1-0 on Aug. 25.

In the series, Portland had more shots (38-33), losing only when the Sounders outshot them 15-10. The Timbers also led in total corner kicks 22-16.

The first meeting between the teams was Portland's third game of the season. The announced attendance was 40,150. Eddie Johnson scored in the 13th minute for Seattle, but second-half sub Rodney Wallace got the equalizer on an open, 10-yard header off a feed from Andrew Jean-Baptiste. Cautions went to Jean-Baptiste and teammate Will Johnson, while Seattle drew three yellow cards.

Johnson won game two with a 60th-minute header from Mauro Rosales before an announced crowd of 67,385. That game had only one caution, to Portland defender Pa Mouda Kah.

The third game's only goal came late in the first half, when midfielder Kalif Alhassan got all of a 20-yard strike to beat Marcus Hahnemann, who had replaced Michael Gspurning in goal for the slumping Sounders. The win put Portland into first place in the MLS West, while Seattle went winless for the fifth match in a row and dropped to third.

The Oct. 13 match included a near-fracas in the 73rd minute, after a Seattle foul on Darlington Nagbe. Seattle captain Osvaldo Alonso and Portland's Will Johnson had a brief talk, and Alonso wound up being ejected for giving Johnson an elbow. Two other Sounders drew a yellow card during the game, while Alhassan got Portland's only caution.

SEATTLE 2, COLORADO 0

In Wednesday's game, the Sounders got goals in the 28th minute from Brad Evans and in second-half stoppage time from Eddie Johnson to eliminate the Rapids.

Seattle won despite losing Gsuprning on a red card in the 85th minute and having to play the rest of the way with 10 men.